Scarifier attachment to go on end of a patrol blade



C. D. COOK SCARIEIER ATTACHMENT TO GO ON ENDS OF PATROL BLADES FiledSept. 25, 1947 2 She'e ts-Sheet 1 INVENTOR. (if/ 671] C0071, Q" MafA'rru RN EYB c. D. COOK July 26, 1949.

SCARIFIER ATTACHMENT TO GO ON ENDS OF PATROL BLADES Filed Sept. 25, 19472 Sheets-Sheet 2 INVENTOR. (mad-12 (w/f,

AITD RN EYE Patented July 26, 1949 UNITED STATES PATENT OFFICE. v I2,477,4w I

SQARIFIER ATTACHMENT roco ONEND OFA PATROL BLADE Clifford D. Cook,Prosser, Wash. Application September 25, 1947, Serial No. 775,985

4 Claims. 1

This invention relates to a scarifierattach" ment for a mold board orscraper blade.

An object of the invention is to provide an at tachment of thischaracter that can be secured to the end of themoldboard orscraper bladeadjacent one end thereof, so that the operator of the power unitcarrying the board or blade can loosen the bottom of a drain ditch or aback slope that cannot be reached by the ordinary board or blade.

Another object of the invention is to provide an attachment of thischaracter that can be easily attached to or removed from a mold board orscraper blade.

With the above and other objects and advantages in view, the inventionconsists of the novel details of construction, arrangement andcombination of parts more fully hereinafter described, claimed andillustrated in the accompanying drawings in which:

Figure 1 is a fragmentary elevatlonal view of a mold board or scraperblade with an embodiment of the invention attached thereto, and showingin dotted lines the various positions in which the embodiment can beadjusted;

Figure 2 is an end view of Figure 1;

Figure 3 is a sectional view on the line 3-43 of Figure 1;

Figure 4 is a sectional Figure 1;

Figure 5 is a fragmentary perspective view of the rear of the mold boardor scraper blade showing the means whereby the embodiment is attachedthereto;

Fi ure 6 is a plan view of the supporting and attaching bracket;

Figure 7 is a front view of the bracket, partly in section and partlybroken away;

Figure 8 is a fragmentary rear view of the bracket;

Figure 9 is a perspective view of the scarifier tooth;

Figure 10 is a front mounting disc and Figure 11 is a rear perspectiveview thereof.

Referring more in detail to the drawings, the numeral 23 designates aconventional mold board or scraper blade on which the embodiment of theinvention later to be described is attached.

Secured to one end of the board or blade 20 on the rear surface thereofby welding or the like, are a pair of spaced parallel and horizontallyarranged plates 2| and 22 respectively, each of which is provided withan opening 23 that are in vertical alinement with each other to reviewon the line 4-4 of perspective View of the 2 ceive the bolt 24 on whichis mounted the'tubular sleeve 25 between the plates-2i and 22. Securedto the sleeve 25 is a U-shaped bracket 26 having a shortleg 21 which iswelded to the sleeve 25 and is positioned at the rear of the blade 20,the base 28 which projects forwardly of the leg 27 and the long leg 29which is positioned at the front of the blade 20.

Secured to the long leg 29 at forwardly extending right angles theretois a second U-shaped bracket 33, having the short leg 3| welded to theface of the leg 29, the base 32 parallel with the leg 29 forwardlythereof, and the long leg 33 secured to the free end of the leg 29 andextending rearwardly thereof.

The leg 29 in the portion intermediate the legs 3| and 33 of the bracket33 is provided with an upper arcuate row of spaced openings 34, and alower row of similar openings 35, which are adapted to receive the studs36 on the rear face of the InOlll'ltiIlg disc 31. The front face of thedisc 31 is provided with a transverse rib 38 which is positioned at thecenter thereof in true right angular relation to the studs 36 on therear face thereof.

With the studs 36 in the openings 34 and 35, the scarifying tooth 39 ispositioned in the bracket 35 with the point 40 thereof at the bottom andone of the transverse grooves 4| in the tooth in engagement with the rib38.

On the opposite side of the tooth, in alinement with the grooves 4|,recesses 42 are provided to receive the reduced end 43 of the screw 44,which is threadably mounted in the tapped opening 45 in the center ofthe base 32 of the bracket 35.

In use, the tooth 39 is mounted so that the upper or lower groove 41will engage the rib 38. The studs 36 are positioned in the openings 7 34and 35 so that the tooth will assume either of the positions shown inFigure 1, and when the screw 44 is tightened, the tooth 39 will be retained in that position.

The nut 46, on the bolt 24, can be loosened to permit the bracket 26 toswing on the bolt 24, into any desired position, and when tightened, thenut 46 will retain the bracket in the desired position.

Thus the tooth can be adjusted for depth and for angularity of cut; itcan work on the front end or rear of the blade to which it is attachedto scarify locations that the blade cannot reach.

It is believed that from the foregoing description, the operation andconstruction of the device will be apparent to those skilled in the art,

and it is to be understood that changes in the minor details ofconstruction, arrangement and combination of parts may be resorted to,provided they fall within the spirit of the invention and the scope ofthe appended claims.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent is:

1. A scarifying attachment for a mold board or scraping blade,comprising a U-shaped bracket, means on the rear of said mold board orscraping blade for securing said bracket thereto, a second U-shapedbracket secured tosaid first said bracket and extending forwardlythereof, means carried by said first said bracket for adjustablymounting a scarifying tooth thereon, and means carried by said secondbracket forretaining said tooth on said mounting means.

2. The invention as in claim 1, wherein said first said U-shaped bracketis provided with a short leg and a long leg, and

a sleeve is secured to the end of the short leg for mounting saidbracket on the mounting means on the rear of said mold board and scraperblade.

3. The invention as in claim 1, wherein said first said U-shaped bracketis provided with a short leg and a long leg and said second U-shapedbracket is similarly formed and the long leg of said second U-shapedbracket is secured to the end of the long leg of said first said bracketand the short leg of said second bracket is secured to the face of thelong leg of the said first said bracket.

4; The invention as in claim 1, wherein the means for adjustablysecuring the tooth to said first said bracket comprises a disc havingspaced forwardly extending studs on the rear face thereof, which areadapted to be received in spaced openings in said first said bracket,and a transverse rib on the front face thereof which is adapted-to bereceived in a similarly formed groove in said scarifying tooth andrecesses in said tooth on the opposite side'thereof are adapted toreceive screws in said second of said brackets so that said screw canretain said tooth in any selective adjusted position with relation tosaid mold board or scraper blade. Y

' a CLIFFORD D. COOK.

No references cited.-

